DESCRIPTION The main body ECU (multiplex network body ECU) detects a high beam headlight illumination request signal of the automatic high beam system from the forward recognition camera.
WIRING DIAGRAM 
PROCEDURE
(a) Check the forward recognition camera system. Click here
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Toyota Tundra Service Manual > Pre-collision System Warning Buzzer: Inspection
INSPECTION PROCEDURE 1. INSPECT SKID CONTROL BUZZER ASSEMBLY (a) Make sure that there is no looseness in the locking part and connecting part of the connector. (b) Disconnect the skid control buzzer connector. (c) Check the connector and terminals for deformation and corrosion. OK: No deformation or ...
